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Microstructure, mechanical properties and multiphase synergistic strengthening mechanisms of a novel laser additive manufactured AlNi6TiZr alloy

文献类型：期刊论文

作者Bi, Jiang1; Wu, Liukun1; Liu, Zeqi1; Wang, Haixiang1; Li, Shide2; Wang, Ji2; Yang, Zhuoyun1; Lu, Nannan3; Chen, Xi4; Starostenkov, Mikhail Dmitrievich5
刊名JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
出版日期2024-04-10
卷号178页码:59-69
关键词Selective laser melting Al6NiTiZr alloy Microstructure Mechanical properties Thermal stability Strengthening mechanism
ISSN号1005-0302
DOI10.1016/j.jmst.2023.08.033
通讯作者Lu, Nannan(nnlu@imr.ac.cn) ; Chen, Xi(chenxi_hit2016@163.com) ; Dong, Guojiang(dgj@ysu.edu.cn)
英文摘要In this work, selective laser melting (SLM) process is used to prepare the AlNi6TiZr alloy. By analyzing the printing quality and mechanical properties of the printed specimens with different process parameters, the SLM forming window of AlNi6TiZr is obtained. The relative density of the sample printed with 270 W-1100 mm/s (laser energy density: 82 J/mm3) reaches 99.7%, exhibiting excellent mechanical properties (yield strength (YS): 421.7 MPa; ultimate tensile strength (UTS): 480.4 MPa). After an aging treatment of 325 degrees C-12 h, the YS and UTS of the sample increased to 494 MPa and 550.7 MPa, respectively. Adding Ni, Ti, and Zr components promoted the generation of multi-phase precipitates in the Al alloy and improved the synergistic strengthening effect of multi-phases. The hard-shell structure (HSS) formed by the Al3Ni phase at the grain boundary significantly strengthened the grain boundary strength. The precipitated Al3(Ti, Zr) phases at the grain boundaries prevent grain growth and dislocation movement. The Al3Ni and Al3(Ti, Zr) phases have good thermal stability that can still maintain excellent enhancement effects at high temperature. AlNi6TiZr alloy has great application prospects in medium and high-temperature environments.(c) 2023 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
资助项目Hebei Natural Science Foundation of China[E2021203138] ; Special Project for Local Science and Technology Development Guided by the Central Government of Hebei Province[236Z1805G]
WOS研究方向Materials Science ; Metallurgy & Metallurgical Engineering
语种英语
WOS记录号WOS:001113100500001
出版者JOURNAL MATER SCI TECHNOL
资助机构Hebei Natural Science Foundation of China ; Special Project for Local Science and Technology Development Guided by the Central Government of Hebei Province
源URL[http://ir.imr.ac.cn/handle/321006/177102]  
专题金属研究所_中国科学院金属研究所
通讯作者Lu, Nannan; Chen, Xi; Dong, Guojiang
作者单位1.Yanshan Univ, Key Lab Adv Forging & Stamping Technol & Sci, Minist Educ, Qinhuangdao 066004, Peoples R China
2.CIT Dicastal Co Ltd, Qinhuangdao 066004, Peoples R China
3.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
4.Harbin Inst Technol, Natl Key Lab Precis Hot Proc Met, Harbin 150001, Peoples R China
5.Altai State Tech Univ, Gen Phys Dept, Leninist 46, Barnaul 656099, Russia
推荐引用方式
GB/T 7714		 Bi, Jiang,Wu, Liukun,Liu, Zeqi,et al. Microstructure, mechanical properties and multiphase synergistic strengthening mechanisms of a novel laser additive manufactured AlNi6TiZr alloy[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2024,178:59-69.
APA Bi, Jiang.,Wu, Liukun.,Liu, Zeqi.,Wang, Haixiang.,Li, Shide.,...&Dong, Guojiang.(2024).Microstructure, mechanical properties and multiphase synergistic strengthening mechanisms of a novel laser additive manufactured AlNi6TiZr alloy.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,178,59-69.
MLA Bi, Jiang,et al."Microstructure, mechanical properties and multiphase synergistic strengthening mechanisms of a novel laser additive manufactured AlNi6TiZr alloy".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 178(2024):59-69.

入库方式： OAI收割

来源：金属研究所

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